People often think that going through a divorce means that the odds your second marriage will end in divorce drastically decrease. They assume that you learned from the mistakes you made the first time around.
For instance, perhaps you got married too quickly -- before you really knew the other person that well. As you got to know each other, it became clear that you shouldn't be married, and you wound up asking for a divorce. If you get married again, you'll spend more time together before committing, so shouldn't you theoretically face lower divorce odds in that second marriage?
While this does seem like it makes sense on some levels, it is really just a common divorce myth. The reality is that second marriages end in divorce more often than first marriages do. Statistically speaking, you're more likely to get divorced that second time, regardless of what you learned in your first marriage.
This isn't to say that all second marriages end in divorce. Many people get married a second time and find the happiness they're looking for. But the statistics do not lie. Divorce is more common.
There are a lot of potential reasons for this, but one is simply that people who have been through divorce once already see it as a viable option in a way that some other couples do not. They understand that sometimes relationships just don't work. If the second one faces similar troubles, they may feel that it is time to move on.
This should not stop you from getting married again, but it does mean that it's important to understand all of your legal rights if you feel that second divorce drawing near.